If she wasn't talented, she wouldn't have made the top 100 because she wouldn't win any matches - but I agree, she does play too much and her schedule is overloaded. I mean why on earth did she sign up for a $25k in the first week of Wimbledon? She's not seriously even considering playing a $25k instead of Wimby...besides if she did she'd get 0 rankings points because she is in the MD of Wimby and so it's mandatory.
She played 15 thus far this year which is impressive. However, there are many where she didn't go far in the draw.
For someone 'untalented' she's not doing too bad, IMO.
Maybe the 3 grass-events in a row right before Wimbly is, indeed, too much, though.
Anyway I wouldn't worry too much. Players in her position have little choice but try to accumulate ranking points to keep going in the main tour, otherwise they can find themselves in a complicated financial position.
Nina is really fit. She can handle it but i agree: she has to play less tournaments cause it's going to break her apart soon
She really shouldn't play itf's anymore. She definetly can handle the wta level
If Wickmayer plays a schedule built around upper tier ("Premier") WTA events, she'll be crashing out first or second round most of the time, and it's very difficult to keep some kind of form when you're losing so often and not getting to play that many matches, not to mention how damaging it must be to one's confidence. Vesnina did that for years (had negative W/L records in several seasons, yet still kept her ranking hovering around #50-65), but she's an exception.
Well she has had to take 2 rather unnecessary flights by playing Birmingham and Ordina. So money mustn't be a major issue for her.
That's not really the point. She's ranked 70 currently, that allows her direct entry to some WTA tournaments (that pay a lot more than ITF's). Would she drop out of the top 100 (which can happen quite fast when you're ranked "only" 70), it would be a big loss of income.