I do all the difficult stuff, apart from inside work, she gets that. I often even lay her hose out for her, to get her on the glass, then go and sort myself out. She just used to whine about getting tangled up.
It takes a bit of practise, but ideally both of us should be 'doing something' at all times. If one of us are just stood about, we need to plan our work better. Normally we just pull up to where we're working and get on with what we've got to do; we've worked together for so long now we're pretty much like clockwork. We can turn over - what I think is a great hourly rate - and don't need to work long hours. Though often I'll finish her early (normally after we've used 450 litres) and head back out by myself. If she worked a full day, she'd expect me to do more around the house.
Toilet can be a pain sometimes; I'm happy to urinate in public, but she's not so keen; so expect to have one job left and hear the magic "I need the toilet" and then have to drive a five-mile-round trip to the toilets 'n' back! I've even bought her a she-wee, but she only uses it on long distance fell running races.
But I don't think window cleaning is suited for most women. I don't know many females who've stuck it for very long. Wor Lass has been at it for over ten years now, but even some blokes can't hack it. If you're thinking of working with Your Lass, she needs to try it out first; especially if she's going to give up a secure job to do it.
Relationship-wise, we've had our ups 'n' downs, but living together, working together and even playing together (we have the same hobby; running) means we spend a heck of a lot of time with each other at times. But it doesn't seem to cause us any problems; just the opposite really because we've always plenty of opportunities to talk.
Anyway, Wor Lass gets her food and board and if she's been really good, I pay her in kind.
hth