14 rounds in three weeks is wild, and the cactus "but softer" line would've broken me. The morning tea thing is the real red flag though, because that's not a brief, that's just her mood that day. You can't design against a target that moves every time she refills her mug. I'd take the deposit, tell her round 15 is the last one included, and put anything after that on a hourly rate she has to approve in writing first.