Depending on where you want to have the shoot.

Some require you to write to them. Some just thru what apps. But now photography is banned everywhere.

Ok, thanks!

for red people, they usually need nice close up portrait with product, if talking the POV of the red people review product, 50k followers consider small influencer for many big brand. they might have a lot different small products which require the right theme of background, clothes and deco that match with product?

if she want to build up followers with just pretty photo with ur free photography, is a good start as she have exposure and you can build ur profile. but you have to connect more of her red people so they remember to use your services and promoting about you. because ppl who see influencer mostly focus on the person not the photographer even they tag you.

make good use of their influencing power. that they speak about ur photogprahy skill but not just tag u. u could share two of your photo taking together after every shooting project, that way u can use for own promoting. so your free services won't be unvaluable. just an opinion hope it helps.