The playdate thing is mint. But I dunno. £200 seems a lot.
Ahh.... look, don't pay too much mind to us. We're vermin. Scavengers. We're here for the drama and giggles. The juicy details. Like why she's leaving the estate.
Now, before you tell us, consider that she might not consider that an example of you having her best interests at heart.
Want to know how to approach a woman? Like anyone. Just remember the idea is to have their interests in your head - but not to go too far.
And to accept the same from her. But don't expect it. It doesn't buy you anything. One way of thinking about it is that there is an unwritten law is that we all have to decide for ourselves, who we are looking out for, and we don't have to reciprocate. It's not the same as being 'nice'. Being nice should follow from you liking their company, being sorted, and having a thought in your head for them.
The trick is, there's no trick to it. The trick is in knowing what to do with the emotions you encounter. Discretion is often the better part of valour. But a bit of directness on the emotional front goes a long way too. Say it clearly, and let just a little show through.
And watch for her emotions. You've told us everything, apart from stuff like, did she appear happy, sad, a mix, did she spend time talking? These are actually really important details, they are what you need to watch for. Just watch them and note them. Don't try and figure them out.
Listen, being light hearted is a real positive when it comes to this - I honestly think you've got that one going for you naturally.