Which London show to take a 16-yer old girl to!

[GrumpyOldMan100]

As someone who's never had kids, I'm hopeless in their company!!
But I'm lucky enough to have a wonderful Peruvian goddaughter who's now 16.
She's currently studying in Germany but is coming over for a weekend in a month's time and I'm struggling to decide on a suitable London show to take her to!
She's been to stay with my wife and I before and we've taken her to Lion King (she's known the story since very young), the School of Rock (easy story to explain), Dick Whittington at the Palladium last Christmas (had to explain story to her) and The Show That Goes Wrong (very visual humour).
While some way to go with her English fluency, I think her English is pretty good. She understands more than she let's on.
Any suggestions please?? Help!!!!!!
On previous visits she's seen quite a lot of London's famous sights - so, in addition to a show, any suggestions for lesser known places in London to visit that would intrigue and stimulate a 16 year old girl?
Thanks in advance.
Grumpy Old Man

Wicked?

Wicked is my favourite musical by far. But it may be worth checking she knows the story of the Wizard of Oz first or she may struggle to understand the plot.

La Boheme at ENO?

Or

Something at ROH?

What sort of entertainment does she enjoy in Germany?

(My point is - she's not a 'kid', she's a young woman, who might have much more sophisticated tastes than you realise.)

How about Mamma Mia the Musical? Our school took our teenaged GCSE students to watch it last month. She's probably watched the movie so will know the story but it's not hard to grasp if not. My DD loved it and the songs are all well known ABBA ones.

Is she into clothes/shopping? If so, you need to take her into town. Start with the big Primark at Marble Arch (they open really early, get there as soon as you can to beat the rush) then Forever 21, which is on the Selfridges side of Oxford St, just before Bond St tube. Then down to Oxford Circus for H&M and Topshop. Final stop Brandy Melville, which is just off Carnaby St. Teen shopper heaven. Stop for an over priced coffee somewhere in Carnaby area, then walk through Soho to Foyles on Charing X Rd. She can choose a book you can buy her to remind her of her trip, then you can have a late lunch in Civert Garden.

I was going to suggest Mamma Mia too *anneofcleavage
My teenagers love trendy markets and quirky shops. Camden is too touristy these days, but try the area round Brick Lane on a weekend - all sorts of interesting things to see. Street art on every corner, hipster coffee shops and plenty to instagram! There are some very interesting street art guided tours if you think her English is up to it (try alternativeldn.co.uk or other providers), or just have a wander and see what you can find. Don't miss the Nomadic Community Garden which you would never find if you didn't know where to look.
Broadway Market (London Fields) on a Saturday is also lovely - mainly artisan foods but a nice place to pick up an interesting lunch before a walk along the tow path - or Columbia Road Flower Market early on a Sunday (gets soooo busy by late morning).

Thanks to everyone for these excellent suggestions - I'm going to book one of those shows today! I'll also be planning a more interesting trip around the more unusual parts of London. GOM!

As per above - helpful article about interesting London markets here:
www.timeout.com/london/shopping/best-london-markets