Sending durood upon Nabi (sallallahu alaihi wasallam)

Q: I have a friend and his mom asked him, as she is jahil, is it permissible to send darood on Nabi Muhammad (sallallahu alaihi wasallam) and he said I don't know with respect because he thought that it may be shirk and then he said"Lekin kiya zaroorat he" with respect not with niyyat of disrespect. He said this because he thought it means that we are maybe asking from Nabi Muhammad (sallallahu alaihi wasallam) or something. Is this kufr?

Meaning of "one salaah time passing" for a person to be a ma'zoor

Q: I would like to find out about being azoor with regards to flatulence. I believe you qualify if you pass wind during one salah time.

My question is, does the salah time mean from the beginning of a certain salah i.e. fajr upto Zuhr start, or just the amount of time between wudu and completion of fajr salah? Also, between Isha and fajr it is a very long time. Does the rule still apply at that time. Please clarify.

Returning a slim fit abaya

Q: I purchased 3 abayas from a lady online. All 3 turned out short even after giving measurements. She tried to fix them but changed the look of the abaya I ordered (it does not look like the original picture). When I received it, they were dumped in a bag. When I called her to say its a slim fit and short and I cannot wear it like this, she asked where her abayas were, to which she responded "oh god". She said her abayas are tailored so it will seem short irrespect of my size, so couldn't she inform me of this? So I could then say... make it bigger, looser and longer as I am in niqaab and cannot leave the house with immodest abayas. She then says why I didn't tell her I'm in niqaab. Being in niqaab or not doesn't matter when purchasing an abaya. I want to send them back to her but she is ignoring me and my messages and refuses to send me her address. The abayas cost R3049 and she doesn't seem bothered that her customer isn't happy. I mentioned that I'm not asking for a refund but that she takes the abayas back and give me the correct sizes but she refuses. Please advise going forward as I havent been rude to her at all but shes been abrupt and not accommodating.