Given the information, will she likely have too much or too little withheld for the current tax year, assuming the following facts? How much?

Given the information provided, it is likely that Liam will have too much withheld for the current tax year. In order to assess this, one must first take into account her filing status and deductions. If Liam is single and does not qualify for any additional deductions (such as dependents or student loan interest payments), then her standard deduction would be $12,400. This means that she would be liable for taxes on an income of $82,600 ($95,000- $12,400) which puts her in a 24% effective tax bracket. Her total federal income witholding should thus amount to approximately $18,644 ($82,600 x 0.24).

With this calculation in mind it appears that she has already had too much withheld from her wages –– $18k compared to the expected total of only ~$18.6k –– meaning she will likely receive a refund come tax time.
It is important to note however that depending on other factors such as deductions and credits claimed by Liam (or if Liam qualifies for any modifications due to COVID-19) there could still be changes made prior to filing taxes; it is best practice therefore to speak with a tax professional or accountant who can further advise on accuracy & best practices when filing taxes come April 2021.