First off - you've asked for guidance and I will offer mine - it may differ from mainstream opinion here, however c'est la vie.
You were responding to a CL ad - some may argue that CL has a lot of B&S - that may be true, however there are legit providers that advertise via CL in order to cast a wider advertising net
While the general tone of your email was polite, someone may be offended with certain questions thus prompting the no-reply - tattoos and scars are personal and what may be a turn on for some may be a turn off for others - beauty is in the eye of the beholder.
when communicating for purposes of getting information or scheduling a date, no provider wants to know about your last date. A provider asking for a reference from another SP (as part of a screening process) is different from an SP wanting to know what your last date looked like or what she did to you
GFE/PSE are subjective terms and mean different things to different people - you did ask about services not offered, good on you.
rates (hourly and overnight)....at this point the lady in question may be thinking you are not a serious client, a tire kicker if you wish - you have not met, you do not know if you will have any chemistry and you're asking about an overnight appointment - chalk this up to inexperience. Put yourself in the provider's shoes - would you want to schedule an extended visit and have awkward silence or worse realize you have zero chemistry and compatibility and have to call the evening? Most providers that accommodate overnight rates do not do so on a first date and will only do so with repeat clients they have a rapport/trust relationship with
asking about overnight donation and then a threesome would likely solidify the belief you were kicking the tires and not serious about booking.
repeatedly asking for rates and more pics (duo partner) might also give that appearance of just another voyeur trying to get his rocks off without making a booking
A few general comments: try to place yourself in the provider's shoes - how would you respond to these types of questions from a total stranger? Then multiply that by say 100 emails per day. After a while of reading the same questions, requests, it does take it's toll. From a client perspective, yes - you're paying for a service - actually, you're paying for time, anything that happens is between two or more consenting adults :wink: - however, this is another person with emotions and feelings and should not be made to fell like a commodity.
Trying to be objective, B$S operators do not care about quality service nor good customer relations. Sometimes, honest open communication from a potential client to a legit provider does not get any response for different reasons - people may be in a bad mood, the content of the communication may be misunderstood, people just can't be bothered, whatever. Chalk it up to lessons learnt and move on. Hope this helps.
Happy travels.