Louise Vernet madame Delaroche (1814-1845), wife of painter Hippolyte de la ROCHE, dit Paul DELAROCHE, (1797-1856) and daughter of painter Horace Vernet (1789-1863) and Louise Pujol (1789-1858). The small gothic-style tomb is the work of Jacques-Félix Duban, (1797-1870), architect. Inside note the medallion of Louise.
Here's how her tomb looked originally:
And here's how it looks today: